The iPhone 4S is the best disappointment Apple has ever released. The build-up to the company’s next iPhone was so over the top, so astronomically hyped, that for some, anything short of the iPhone 6 would have been a letdown. When the 4S was announced, “in-the-know” tech heads chastised it for retaining the same body they hailed as the best of all time a little over a year ago. But no matter how vocal the vocal minority might have been, the iPhone 4S has flown off shelves at a rate that just might make it the fastest-selling gadget of all time.